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Biology > ☀️The Nervous System > Flashcards

☀️The Nervous System Flashcards

1
Q

What is co ordination carried out by

A

The nervous and endocrine system

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2
Q

Stimulus

A

Anything hat causes a reaction in an organism

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3
Q

Nervous system relies on

A

Electric signals carried out by neurons

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4
Q

Brain

A

Keeps check on internal organs and activities

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5
Q

What is the system outside the nervous system called

A

Peripheral nervous system

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6
Q

Neuron

A

Nerve cell

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7
Q

Endocrines are carried by

A

The blood

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8
Q

Endocrines messages are carried

A

Chemically

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9
Q

Endocrines speed of transmission is

A

Slow

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10
Q

Nervous messages are carried

A

Electrically

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11
Q

Nervous carried by

A

Nerve cell

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12
Q

Nerve Speed of transmission is

A

Rapid

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13
Q

Equation

A

Stimulus- receptor - process - effector - Responce

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14
Q

Responce is

A

A nerve cell that detects a stimulus

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15
Q

Cell body contains

A

The nucleus and other organelles

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16
Q

Cell body produces

A

Neurotransmitter chemicals

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17
Q

Dendron

A

Recieves info and carries it TOWARDS the cell body

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18
Q

Axon

A

Conducts impulses away from the body

19
Q

Dendrites

A

Carry impulses to a cell body

20
Q

Schwann cell

A

Form a myelin sheath

21
Q

Myelin sheath

A

Insulates the neuron from electrical impulses in other neurons

22
Q

Name the 3 types of neuron

A

Sensory neuron
Interneuron
Motor neuron

23
Q

Sensory neuron

A

Carries messages from the sense organs to the cns

24
Q

Interneuron

A

Connects sensory and motor neurons within the cns

25
Q

Motor neurons

A

Careies impulses from cns to muscles and glands

26
Q

Synapse

A

Where two neurons come into contact

27
Q

Synaptic clef

A

Gap between two neurons

28
Q

Neutrotransmitters

A

Carry signal from one neuron to another

29
Q

How many neurons is the brain compsoed of

A

100 billion

30
Q

Brain is protected by the

A

Skull, 3 membranes and cerebrospinal fluid

31
Q

Cerebrum

A

Our conscious brain

32
Q

Hypothalum

A

Controls internal environment in our body

33
Q

Pituitary gland

A

Is the master gland

34
Q

Spinal cord

A

Carries impulses to and from the brain and controls reflexes

35
Q

Each spinal nerve has

A

A dosal root and a ventral root

36
Q

Dorsal root carries

A

Information into the spinal cord from the senses

37
Q

Dorsal root ganglion contains

A

Cell bodies of sensory neurons

38
Q

Ventral root carries

A

Intro out if the spinal cord to the muscle and glands

39
Q

Reflex action

A

Is a quick automatic response to a particular stimulus

40
Q

Reflex action

A

Automatic responce to a stimulus

41
Q

Parkinsons disease is caused by

A

Lack of dopamine in the brain

42
Q

What happens when someone has parkinsons disease

A

Muscles become rigid, slow movement and persistent shaking

43
Q

Parkinsons disease treatment

A

Giving L dopa can reduce the symptoms (but no means of preventing it)

Biology (29 decks)

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